Wassim Michael Haddad (born July 14, 1961) is a Lebanese-Greek-American applied mathematician, scientist, and engineer, with research specialization in the areas of

dynamical systems In mathematics, a dynamical system is a system in which a function describes the time dependence of a point in an ambient space. Examples include the mathematical models that describe the swinging of a clock pendulum, the flow of water in a p ...

and

control Control may refer to: Basic meanings Economics and business * Control (management), an element of management * Control, an element of management accounting * Comptroller (or controller), a senior financial officer in an organization * Controlling ...

. His research has led to fundamental breakthroughs in

applied mathematics Applied mathematics is the application of mathematical methods by different fields such as physics, engineering, medicine, biology, finance, business, computer science, and industry. Thus, applied mathematics is a combination of mathematical s ...

thermodynamics Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these quantities is governed by the four laws of the ...

stability theory In mathematics, stability theory addresses the stability of solutions of differential equations and of trajectories of dynamical systems under small perturbations of initial conditions. The heat equation, for example, is a stable partial diffe ...

robust control In control theory, robust control is an approach to controller design that explicitly deals with uncertainty. Robust control methods are designed to function properly provided that uncertain parameters or disturbances are found within some (typicall ...

, dynamical system theory, and

neuroscience Neuroscience is the scientific study of the nervous system (the brain, spinal cord, and peripheral nervous system), its functions and disorders. It is a multidisciplinary science that combines physiology, anatomy, molecular biology, development ...

. Professor Haddad is a member of the faculty o
the School of Aerospace Engineering
at

Georgia Institute of Technology The Georgia Institute of Technology, commonly referred to as Georgia Tech or, in the state of Georgia, as Tech or The Institute, is a public research university and institute of technology in Atlanta, Georgia. Established in 1885, it is part of ...

, where he holds the rank of Professor and Chair of the Flight Mechanics and Control Discipline. Dr. Haddad is a member of th
Academy of Nonlinear Sciences
for recognition of paramount contributions to the fields of nonlinear stability theory, nonlinear dynamical systems, and nonlinear control and an IEEE Fellow for contributions to robust, nonlinear, and hybrid control systems.

Biography

Early life and education

Haddad was born in

Athens Athens ( ; el, Αθήνα, Athína ; grc, Ἀθῆναι, Athênai (pl.) ) is both the capital and largest city of Greece. With a population close to four million, it is also the seventh largest city in the European Union. Athens dominates ...

Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with ...

, to a Greek mother and Lebanese father. He attended a private British secondary school for his early education and the

American Community Schools ACS Athens – American Community Schools of Athens is a private school offering international JK–12 education to local, national and international students in Greece. ACS Athens embraces American educational philosophy, principles and values. ...

in Athens and

Beirut Beirut, french: Beyrouth is the capital and largest city of Lebanon. , Greater Beirut has a population of 2.5 million, which makes it the third-largest city in the Levant region. The city is situated on a peninsula at the midpoint o ...

, respectively, for his high school education. After completing his high school, where he was taught Greek, French, philosophy, and basic science and mathematics, in 1979 he entered th
Mechanical and Aerospace Engineering Department
of the Florida Institute of Technology in Melbourne, Florida. Haddad received the B.S., M.S., and Ph.D. degrees in

mechanical engineering Mechanical engineering is the study of physical machines that may involve force and movement. It is an engineering branch that combines engineering physics and mathematics principles with materials science, to design, analyze, manufacture, and ...

from Florida Tech in 1983, 1984, and 1987, respectively, with specialization in

and

. His doctoral research concentrated on fixed-architecture robust control design with applications to large flexible space structures and wit
Dennis S. Bernstein
serving as his doctoral advisor.

Academic career

From 1987 to 1994 Haddad served as a consultant for the Structural Controls Group of the Government Aerospace Systems Division,

Harris Corporation Harris Corporation was an American technology company, defense contractor, and information technology services provider that produced wireless equipment, tactical radios, electronic systems, night vision equipment and both terrestrial and spaceb ...

, Melbourne, Florida. In 1988 he joined the faculty of the Mechanical and Aerospace Engineering Department at Florida Institute of Technology, where he founded and developed the Systems and Control Option within the graduate program and was instrumental in bolstering control systems activities within the Space Research Institute at the Florida Tech. Since 1994 he has been a member of the faculty i
the School of Aerospace Engineering
at the

Presidential Faculty Fellow

In recognition for his "demonstrated excellence and continued promise in scientific and engineering research and in teaching future generations of students to extend and apply human knowledge," Professor Haddad was awarded the

National Science Foundation The National Science Foundation (NSF) is an independent agency of the United States government that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National I ...

Presidential Faculty Fellow Award in 1993. The award was bestowed by President

Bill Clinton William Jefferson Clinton ( né Blythe III; born August 19, 1946) is an American politician who served as the 42nd president of the United States from 1993 to 2001. He previously served as governor of Arkansas from 1979 to 1981 and agai ...

in a White House Rose Garden ceremony to recognize and support the scholarly activities of the "Nation's most outstanding science and engineering faculty" members.

Research

Dr. Haddad's interdisciplinary research contributions are documented in over 550 archival journal and conference publications and seven books in the areas of science, mathematics, medicine, and engineering. His research in nonlinear robust and

adaptive control Adaptive control is the control method used by a controller which must adapt to a controlled system with parameters which vary, or are initially uncertain. For example, as an aircraft flies, its mass will slowly decrease as a result of fuel consumpt ...

, nonlinear dynamical system theory, large-scale systems, hierarchical nonlinear switching control, analysis and control of nonlinear impulsive and hybrid systems, adaptive and neuroadaptive control, system thermodynamics, thermodynamic modeling of mechanical and aerospace systems, network systems, expert systems, nonlinear analysis and control for

biological Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditary in ...

and

physiological Physiology (; ) is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out the chemical ...

systems, active control for

clinical pharmacology Clinical pharmacology has been defined as "that discipline that teaches, does research, frames policy, gives information and advice about the actions and proper uses of medicines in humans and implements that knowledge in clinical practice". Clinic ...

, and

mathematical neuroscience Computational neuroscience (also known as theoretical neuroscience or mathematical neuroscience) is a branch of neuroscience which employs mathematical models, computer simulations, theoretical analysis and abstractions of the brain to u ...

have placed him as one of the prominent scholars, educators, and technology developers in the aerospace, electrical, and biomedical engineering communities. His secondary interests include the history of

science Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for ...

and

mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...

, as well as

natural philosophy Natural philosophy or philosophy of nature (from Latin ''philosophia naturalis'') is the philosophical study of physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior throu ...

Fixed-structure control design

In a series of papers with D. S. Bernstein and D. C. Hyland in the mid-1980s on the subject of "optimal projection fixed-structure control," Haddad solved several important problems concerning the design of reduced-order optimally robust compensators and estimators for multivariable systems. Haddad's fixed-structure control framework provides the capability for simultaneously performing multiple design tradeoffs for multivariable systems with respect to competing constraints such as sensor noise, control effort, controller order, robustness, disturbance rejection, mean-square error, sample rate, and controller architecture. This approach provides the theoretical underpinning for the design of "industry standard" controllers that fully encompass classical design objectives within multivariable control theory. This work provided the foundation for numerous researchers in the 1990s to address advances in fixed-order control via Linear Matrix Inequalities (LMIs).

Mixed-norm multiobjective control design

Haddad's work on the mixed-norm multiobjective controller synthesis problem and, specifically, the mixed H₂/ H_∞ control problem, was the first to correctly and rigorously fully address the design of full- and reduced-order controllers for disturbance rejection that simultaneously account for narrow-band and wide-band disturbances without undue conservativeness. Haddad's seminal publications on the mixed-norm control problem spawned an extremely active area of research, with numerous papers being written by different research groups around the world that drew heavily on this foundational work.

Robust control for systems with structured uncertainty

This work was the first to satisfactorily address the then open problem on robust stability and performance problems for constant real parameter uncertainty in the literature via parameter-dependent Lyapunov functions. The work provided a fundamental generalization of mixed-μ analysis and synthesis in terms of

Lyapunov functions In the theory of ordinary differential equations (ODEs), Lyapunov functions, named after Aleksandr Lyapunov, are scalar functions that may be used to prove the stability of an equilibrium of an ODE. Lyapunov functions (also called Lyapunov’s s ...

and

Riccati equation In mathematics, a Riccati equation in the narrowest sense is any first-order ordinary differential equation that is quadratic in the unknown function. In other words, it is an equation of the form : y'(x) = q_0(x) + q_1(x) \, y(x) + q_2(x) \, y^2(x ...

s. This unification between mixed-μ and parameter-dependent Lyapunov functions resulted in new machinery for mixed-μ controller synthesis by providing the basis for a reliable, fully automated μ-synthesis procedure while, for the first time, simultaneously capturing H₂ performance while avoiding suboptimal multiplier-controller iteration and curve-fitting procedures. This research has produced advanced theoretical breakthroughs directly supporting engineering practice.

Propulsion control for rotating stall and surge

Haddad's work in this area concentrated in the development of advanced nonlinear robust disturbance rejection control methodologies for nonlinear systems with applications to flow control associated with aerospace vehicles. Specifically, he developed an optimality-based nonlinear control framework to synthesize robust globally stabilizing disturbance rejection controllers for nonlinear systems with structured nonlinear parametric uncertainty and uncertain exogenous disturbances. His results have been applied to combustion systems to suppress the effects of thermoacoustic instabilities in

gas turbine engines A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the directi ...

as well as

propulsion systems Propulsion is the generation of force by any combination of pushing or pulling to modify the translational motion of an object, which is typically a rigid body (or an articulated rigid body) but may also concern a fluid. The term is derived from ...

to control the aerodynamic instabilities of rotating stall and surge in jet engines. This research has demonstrated concrete improvements in compression system performance, robustness, reliability, and maintainability in highly visible

United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national secu ...

projects under the support of

AFOSR The Air Force Research Laboratory (AFRL) is a scientific research organization operated by the United States Air Force Materiel Command dedicated to leading the discovery, development, and integration of aerospace warfighting technologies, pl ...

, ARO, and

NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding t ...

. His book ''Hierarchical Nonlinear Switching Control Design with Application to Propulsion Systems'', London, UK: Springer-Verlag, 2000, in this area provides a novel and unique hierarchical nonlinear switching control framework for general nonlinear uncertain systems giving a rigorous alternative to gain scheduling control for systems with multiple modes of operation.

Thermodynamics

Haddad's ''Thermodynamics: A Dynamical Systems Approach'', Princeton, NJ: Princeton University Press, 2005, develops a novel and unique system-theoretic framework of

. Thermodynamics is one of the bedrock disciplines of

physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...

and

engineering Engineering is the use of scientific method, scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad rang ...

, yet its foundation has been lacking rigor and clarity as very eloquently pointed out by the American mathematician and natural philosopher

Clifford Truesdell Clifford Ambrose Truesdell III (February 18, 1919 – January 14, 2000) was an American mathematician, natural philosopher, and historian of science. Life Truesdell was born in Los Angeles, California. After high school, he spent two years in Eur ...

. Over the years, researchers from the systems and control community have acknowledged the need for developing a solid foundation for thermodynamics. Haddad's book brings together a vast range of ideas and tools to construct a powerful framework for thermodynamics. He uses dissipativity theory, nonstandard Lyapunov ideas, and positive system theory in his work. His framework captures all of the key ideas of

, including its fundamental laws, providing a harmonization of classical thermodynamics with

classical mechanics Classical mechanics is a physical theory describing the motion of macroscopic objects, from projectiles to parts of machinery, and astronomical objects, such as spacecraft, planets, stars, and galaxies. For objects governed by classical ...

. The work is a "technical masterpiece" that brings to bear and extends the kind of applied analysis that is hallmark to the dynamical systems and control community. In particular, Haddad's exposition brings coherence and clarity to an extremely important classical area of science and engineering. Extensions of this work are reported in.

Impulsive and hybrid dynamical systems

Haddad's key work on impulsive and hybrid dynamical systems and control include. His book on ''Impulsive and Hybrid Dynamical Systems: Stability, Dissipativity, and Control'', Princeton, NJ: Princeton University Press, 2006, provides a highly detailed, general analysis and synthesis framework for impulsive and hybrid dynamical systems. In particular, this research monograph develops fundamental results on stability, dissipativity theory, energy-based hybrid control,

optimal control Optimal control theory is a branch of mathematical optimization that deals with finding a control for a dynamical system over a period of time such that an objective function is optimized. It has numerous applications in science, engineering and ...

, disturbance rejection control, and

for nonlinear impulsive and hybrid dynamical systems. The monograph is written from a system-theoretic point of view and provides a fundamental contribution to mathematical system theory and control system theory. "No book in print has the depth and breadth of this book."

Nonlinear dynamical systems and control

Haddad's research in the area on nonlinear dynamical system theory is highlighted in his textbook on ''Nonlinear Dynamical Systems and Control: A Lyapunov-Based Approach'' , Princeton, NJ: Princeton University Press, 2008. This 1000-page "encyclopedic masterpiece" presents and develops an extensive treatment of stability analysis and control design of nonlinear dynamical systems, with an emphasis on Lyapunov-based methods. Topics include Lyapunov stability theory, partial stability,

Lagrange Joseph-Louis Lagrange (born Giuseppe Luigi Lagrangiaboundedness, ultimate boundedness, input-to-state stability, input-output stability, finite-time stability, semistability, stability of sets, stability of periodic orbits, and stability theorems via vector Lyapunov functions. In addition, a complete and thorough treatment of dissipativity theory, absolute stability theory, stability of feedback interconnections,

, backstepping control, disturbance rejection control, and

via fixed and parameter-dependent

for nonlinear

continuous-time In mathematical dynamics, discrete time and continuous time are two alternative frameworks within which variables that evolve over time are modeled. Discrete time Discrete time views values of variables as occurring at distinct, separate "po ...

and discrete-time dynamical systems is also given.

Nonnegative and compartmental dynamical systems

Haddad's treatise on ''Nonnegative and Compartmental Dynamical Systems'', Princeton, NJ: Princeton University Press, 2010, presents a complete analysis and design framework for modeling and feedback control of nonnegative and compartmental dynamical systems. This work is rigorously theoretical in nature yet vitally practical in impact. The concepts are illustrated by examples from

biology Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditary i ...

chemistry Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...

ecology Ecology () is the study of the relationships between living organisms, including humans, and their physical environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere level. Ecology overlaps wi ...

economics Economics () is the social science that studies the Production (economics), production, distribution (economics), distribution, and Consumption (economics), consumption of goods and services. Economics focuses on the behaviour and intera ...

genetics Genetics is the study of genes, genetic variation, and heredity in organisms.Hartl D, Jones E (2005) It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar wor ...

medicine Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care pract ...

sociology Sociology is a social science that focuses on society, human social behavior, patterns of Interpersonal ties, social relationships, social interaction, and aspects of culture associated with everyday life. It uses various methods of Empirical ...

, and

. This book develops a unified stability and dissipativity analysis and control design framework for nonnegative and compartmental dynamical systems in order to foster the understanding of these systems as well as advancing the state-of-the-art in active control of nonnegative and compartmental systems. It has had fundamental ramifications in many areas of intense interest in today's contracting world, where

, and

in closely interacting populations are becoming more important, where

epidemiology Epidemiology is the study and analysis of the distribution (who, when, and where), patterns and determinants of health and disease conditions in a defined population. It is a cornerstone of public health, and shapes policy decisions and evidenc ...

and

are essential in understanding disease propagation in more and more closely interacting groups, and where real-time control system technology impacts modern medicine through robotic surgery,

electrophysiological Electrophysiology (from Greek , ''ēlektron'', "amber" etymology of "electron"">Electron#Etymology">etymology of "electron" , ''physis'', "nature, origin"; and , ''-logia'') is the branch of physiology that studies the electrical properties of bi ...

systems (

pacemaker An artificial cardiac pacemaker (or artificial pacemaker, so as not to be confused with the natural cardiac pacemaker) or pacemaker is a medical device that generates electrical impulses delivered by electrodes to the chambers of the heart eith ...

s and automatic implantable

defibrillators Defibrillation is a treatment for life-threatening cardiac arrhythmias, specifically ventricular fibrillation (V-Fib) and non-perfusing ventricular tachycardia (V-Tach). A defibrillator delivers a dose of electric current (often called a ''coun ...

life support Life support comprises the treatments and techniques performed in an emergency in order to support life after the failure of one or more vital organs. Healthcare providers and emergency medical technicians are generally certified to perform basic ...

(

ventilators A ventilator is a piece of medical technology that provides mechanical ventilation by moving breathable air into and out of the lungs, to deliver breaths to a patient who is physically unable to breathe, or breathing insufficiently. Ventilators ...

, artificial hearts), and image-guided therapy and surgery.

Stability and control of large-scale systems

In this research, Haddad has brought a longstanding research theme to fruition by his work on vector dissipative systems approaches to large-scale nonlinear dynamical systems. This work has broad application to large-scale aerospace systems,

air traffic control Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airs ...

systems, power and energy grid systems,

manufacturing Manufacturing is the creation or production of goods with the help of equipment, labor, machines, tools, and chemical or biological processing or formulation. It is the essence of secondary sector of the economy. The term may refer to a r ...

and

process A process is a series or set of activities that interact to produce a result; it may occur once-only or be recurrent or periodic. Things called a process include: Business and management *Business process, activities that produce a specific se ...

ing systems,

transportation Transport (in British English), or transportation (in American English), is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land (rail and road), water, cable, pipeline, ...

systems,

communication Communication (from la, communicare, meaning "to share" or "to be in relation with") is usually defined as the transmission of information. The term may also refer to the message communicated through such transmissions or the field of inquir ...

and

information networks A computer network is a set of computers sharing resources located on or provided by Node (networking), network nodes. The computers use common communication protocols over digital signal, digital interconnections to communicate with each ot ...

, integrative

biological systems A biological system is a complex network which connects several biologically relevant entities. Biological organization spans several scales and are determined based different structures depending on what the system is. Examples of biological syst ...

biological neural networks A neural circuit is a population of neurons interconnected by synapses to carry out a specific function when activated. Neural circuits interconnect to one another to form large scale brain networks. Biological neural networks have inspired t ...

, biomolecular and biochemical systems,

nervous systems In biology, the nervous system is the highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body. The nervous system detects environmental changes th ...

, immune systems, environmental and ecological systems,

molecular A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion. In quantum physics, organic chemistry, and bioche ...

quantum In physics, a quantum (plural quanta) is the minimum amount of any physical entity (physical property) involved in an interaction. The fundamental notion that a physical property can be "quantized" is referred to as "the hypothesis of quantizati ...

, and nanoscale systems, particulate and

chemical reaction A chemical reaction is a process that leads to the IUPAC nomenclature for organic transformations, chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the pos ...

systems, and

economic An economy is an area of the Production (economics), production, Distribution (economics), distribution and trade, as well as Consumption (economics), consumption of Goods (economics), goods and Service (economics), services. In general, it is ...

and

financial Finance is the study and discipline of money, currency and capital assets. It is related to, but not synonymous with economics, the study of production, distribution, and consumption of money, assets, goods and services (the discipline of fina ...

systems, to name but a few examples. His most recent book in this area, ''Stability and Control of Large-Scale Dynamical Systems: A Vector Dissipative Systems Approach'', Princeton, NJ: Princeton University Press, 2011, addresses highly interconnected and mutually interdependent complex aerospace dynamical systems.

Control of multiagent network systems

In this work, Haddad has merged

systems biology Systems biology is the computational modeling, computational and mathematical analysis and modeling of complex biological systems. It is a biology-based interdisciplinary field of study that focuses on complex interactions within biological syst ...

and system thermodynamics with network engineering systems to develop functional and robust algorithms for agent coordination and control of autonomous

multiagent An agent-based model (ABM) is a computational model for simulating the actions and interactions of autonomous agents (both individual or collective entities such as organizations or groups) in order to understand the behavior of a system and what ...

aerospace systems. In particular, looking to autonomous swarm systems appearing in nature for inspiration, he has developed control algorithms to address agent interactions,

cooperative A cooperative (also known as co-operative, co-op, or coop) is "an autonomous association of persons united voluntarily to meet their common economic, social and cultural needs and aspirations through a jointly owned and democratically-control ...

and non-cooperative control, task assignments, and resource allocations for multiagent network systems. This work has had a major impact on cooperative control of

unmanned air vehicles An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human Aircraft pilot, pilot, crew, or passengers on board. UAVs are a component of an #Terminology, unmanned aircraft system (UAS), which includes add ...

, autonomous

underwater vehicles An underwater vehicle is any member of the class of vehicles (machines that transports people or cargo) that is intended to operate in the underwater environment The underwater environment is the region below the surface of, and immersed in, ...

, distributed sensor networks, air and ground transportation systems, swarms of air and space vehicle formations, and congestion control in

communication networks A telecommunications network is a group of nodes interconnected by telecommunications links that are used to exchange messages between the nodes. The links may use a variety of technologies based on the methodologies of circuit switching, messag ...

. His results exploit fundamental links between system thermodynamics and

information theory Information theory is the scientific study of the quantification (science), quantification, computer data storage, storage, and telecommunication, communication of information. The field was originally established by the works of Harry Nyquist a ...

in "ingenious ways" and have initiated major breakthroughs in control of networks and control over networks.

Adaptive and neuroadaptive control for clinical pharmacology

Haddad's work in this area has tackled one of the most challenging problems in

. In particular, he has developed adaptive and

neural network A neural network is a network or circuit of biological neurons, or, in a modern sense, an artificial neural network, composed of artificial neurons or nodes. Thus, a neural network is either a biological neural network, made up of biological ...

adaptive

algorithms for automated

anesthesia Anesthesia is a state of controlled, temporary loss of sensation or awareness that is induced for medical or veterinary purposes. It may include some or all of analgesia (relief from or prevention of pain), paralysis (muscle relaxation), ...

and

critical care unit 220px, Intensive care unit An intensive care unit (ICU), also known as an intensive therapy unit or intensive treatment unit (ITU) or critical care unit (CCU), is a special department of a hospital or health care facility that provides intensiv ...

medicine. His

algorithms adjust to interpatient and intrapatient

pharmacokinetic Pharmacokinetics (from Ancient Greek ''pharmakon'' "drug" and ''kinetikos'' "moving, putting in motion"; see chemical kinetics), sometimes abbreviated as PK, is a branch of pharmacology dedicated to determining the fate of substances administered ...

and

pharmacodynamic Pharmacodynamics (PD) is the study of the biochemical and physiologic effects of drugs (especially pharmaceutical drugs). The effects can include those manifested within animals (including humans), microorganisms, or combinations of organisms (for ...

variability and have significantly improved the outcome for

drug administration A medication (also called medicament, medicine, pharmaceutical drug, medicinal drug or simply drug) is a drug used to diagnose, cure, treat, or prevent disease. Drug therapy (pharmacotherapy) is an important part of the medical field and rel ...

. This research in active control of clinical pharmacology has transitioned to clinical practice and is improving medical care, health care, and reliability of drug dosing equipment, and has a real potential of reducing health care costs. Haddad's achievements in this area have been very influential in the

biomedical engineering Biomedical engineering (BME) or medical engineering is the application of engineering principles and design concepts to medicine and biology for healthcare purposes (e.g., diagnostic or therapeutic). BME is also traditionally logical sciences ...

field. His results in

are documented in.

Books

* A. Leonessa, W. M. Haddad, and V. Chellaboina
''Hierarchical Nonlinear Switching Control Design with Application to Propulsion Systems''
London, UK: Springer-Verlag, 2000. * W. M. Haddad, V. Chellaboina, and S. G. Nersesov

Princeton, NJ: Princeton University Press, 2005. * W. M. Haddad, V. Chellaboina, and S. G. Nersesov

Princeton, NJ: Princeton University Press, 2006. * W. M. Haddad and V. Chellaboina

Princeton, NJ: Princeton University Press, 2008. Erratum * W. M. Haddad, V. Chellaboina, and Q. Hui

Princeton, NJ: Princeton University Press, 2010. * W. M. Haddad and S. G. Nersesov

Princeton, NJ: Princeton University Press, 2011.

Selected references

External links

Wassim M. Haddad's homepage
{{DEFAULTSORT:Haddad, Wassim Michael 1961 births Living people 20th-century American mathematicians 21st-century American engineers American people of Greek descent American people of Lebanese descent Florida Institute of Technology alumni Georgia Tech faculty Fellow Members of the IEEE Systems engineers Control theorists 21st-century American mathematicians